Complex for preparing highly branched poly (4-methyl-1-pentene) material and preparation method thereof

The technology of a complex and trimethylaluminum is applied in the preparation of a complex of a highly branched poly-4-methyl-1-pentene material and the preparation field thereof, and can solve the problem of inability to catalyze the copolymerization of olefins and polar monomers, assist the The problem of expensive catalyst methylaluminoxane and high manufacturing cost
CN112745355AInactive Publication Date: 2021-05-04张洪胜
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
张洪胜
Publication Date
2021-05-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a complex for preparing a highly branched poly (4-methyl-1-pentene) material and a preparation method of the complex. When the diimine palladium complex is applied to 4-methyl-1-pentene polymerization, the reaction condition is mild, and the polymerization reaction does not need to be carried out under harsh anhydrous and anaerobic conditions; according to the present invention, the propyl group is introduced to the ortho-position of the imine nitrogen atom aromatic ring, so that the dynamic steric hindrance can be provided for the complex during the catalytic polymerization process so as to finely adjust the space environment of the Pd catalytic activity center, regulate the branching degree and the molecular weight of the polymer, and obtain the highly branched poly 4-methyl-1-pentene;.
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Description

technical field

[0001] The invention belongs to the field of polyolefin preparation, and in particular relates to a complex for preparing highly branched poly-4-methyl-1-pentene material and a preparation method thereof. Background technique

[0002] Poly-4-methyl-1-pentene can be formed by injection molding, blow molding, extrusion molding and other methods. The main purpose is to manufacture medical equipment (such as syringes), physical and chemical laboratory equipment, special food utensils for electronic stoves, baking trays, release paper, heat-resistant wire coatings, etc. The monomer 4-methyl-1-pentene is obtained by dimerization of propylene, and then obtained by polymerization with a catalyst.

[0003] In recent years, the research on using 4-methyl-1-pentene as a homopolymerization or comonomer mainly focuses on metallocene catalysts and non-metallocene catalysts of early transition metal systems. However, the production cost of metallocene catalysts or non-met...

Claims

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